转载请注明出处：小锋学长生活大爆炸[xfxuezhang.cn]

文件下载：https://download.csdn.net/download/sxf1061700625/88134425

示例演示：

参考代码：

import os
import _thread
import shutil
import subprocess
import sys
import requests
from tkinter import Tk, Label, IntVar, DoubleVar, HORIZONTAL, messagebox
from tkinter.ttk import Progressbar
import pyautogui



class SoftUpdateDialog:
    def __init__(self, soft_version):
        self.soft_update_url = 'http://xfxuezhang.cn/web/share/version/update_demo'
        self.soft_version = soft_version


    def init_ui(self, root):
        self.root = root
        self.root.title('软件更新')
        self.root.geometry('300x100')
        self.progress_var = IntVar()
        self.label_var = DoubleVar()
        self.label_var.set(0.0)
        label = Label(self.root, text='正在更新软件，请等待···')
        label.pack(pady=5)

        self.progress_bar = Progressbar(self.root, length=200, mode='indeterminate')
        self.progress_bar.pack(pady=5)



    def tip_show(self, msg):
        """消息提示"""
        messagebox.showwarning('提示', msg)

    def soft_download_with_thread(self):
        '''开线程下载'''
        # 下载txt文件
        url = self.soft_update_url
        try:
            req = requests.get(url, stream=True, verify=False)
        except Exception:
            self.tip_show('请检查网络设置，无法检测到网络连接')
            return
        if req is None or str(req.status_code) != '200':
            self.tip_show('软件更新失败，请检查网络设置，无法检测到网络连接')
            return
        json_result = req.json()

        # 版本比对
        latest_version = json_result['soft_version']
        latest_soft_url = json_result['soft_url']
        if self.compare_version(latest_version):
            # 下载进度工具条
            self.progress_var.set(0)
            self.progress_bar.start(60)

            # self._soft_download(latest_soft_url, latest_version)
            # 软件下载线程
            _thread.start_new_thread(self._soft_download, (latest_soft_url, latest_version))


    def check_version(self):
        url = self.soft_update_url
        try:
            req = requests.get(url, stream=True, verify=False)
        except Exception:
            self.tip_show('请检查网络设置，无法检测到网络连接')
            return
        if req is None or str(req.status_code) != '200':
            self.tip_show('软件更新失败，请检查网络设置，无法检测到网络连接')
            return
        json_result = req.json()

        # 版本比对
        latest_version = json_result['soft_version']
        return self.compare_version(latest_version)


    def _update_progressbar(self):
        '''更新进度条'''
        self.progress_bar['value'] = self.label_var.get()

    def _end_update(self):
        '''结束更新'''
        self.progress_bar.stop()
        self.root.destroy()
        
        

    def get_remote_file_size(self, url, proxy=None):
        """通过content-length头获取远程文件大小"""
        try:
            req = requests.head(url, proxies={'http': proxy, 'https': proxy} if proxy else None, verify=False)
            fileSize = int(req.headers.get('Content-Length', 0))
            return fileSize
        except Exception:
            return 0

    def _soft_download(self, latest_url, latest_version):
        '''软件下载'''
        self.label_var.set(0.0)
        lastest_name = os.path.basename(latest_url)
        lastest_size = self.get_remote_file_size(latest_url)

        start_size = 0
        with requests.get(latest_url, stream=True, verify=False) as r:
            with open(lastest_name, "wb") as f:
                for chunk in r.iter_content(chunk_size=1024):
                    if not chunk:
                        continue
                    start_size += len(chunk)
                    f.write(chunk)
                    f.flush()
                    self.label_var.set(100.0 * start_size / lastest_size)
        
        print('>> ok')
        self._end_update()

    def compare_version(self, latest_version):
        return int(self.soft_version.replace('.', '')) < int(latest_version.replace('.', ''))


if __name__ == '__main__':
    app = Tk()
    app.geometry('0x0')
    soft_dialog = SoftUpdateDialog(soft_version='0.0.5')
    
    if soft_dialog.check_version() and pyautogui.confirm(text='有新版本，是否更新', title='通知', buttons=['OK', 'Cancel'])=='OK':
        soft_dialog.init_ui(root=app)
        soft_dialog.soft_download_with_thread()
        app.mainloop()
        pyautogui.alert(text='下载完成！', title='通知', button='好的👌🏻')

远程服务器的文件格式：

{
  "soft_version": "1.0.0",
  "soft_url": "http://xfxuezhang.cn/web/share/version/update_demo.exe"
}